Oven cooktop grate



FIG. 1 is a top right front perspective view of an oven cooktop grate showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left-side elevation view thereof;

FIG. 4 is a right-side elevation view thereof; and,

FIG. 5 is a top plan view thereof.

The dashed broken lines are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for an oven cooktop grate, as shown and described. 